Aiming at the phenomenon that the pure water medium safety valve of coal mine support is easy to produce cavitation in high pressure operation. A kind of secondary throttle valve structure is designed and optimized to achieve the effect of restraining the formation of water vapor bubbles. Firstly, the mathematical model of vapor bubble is obtained through theoretical analysis, and the valve core model is optimized in three ways. Their respective flow field models are established and imported into Fluent for simulation calculation, and the performance of the three anti cavitation is analyzed. The results show that: by adding a high-pressure orifice channel to the valve seat, the pressure compensation of the orifice channel can effectively reduce the original serious cavitation area. Therefore, adding a high-pressure orifice in the appropriate position of the valve core or valve seat can effectively improve the pressure distribution and inhibit the occurrence of cavitation.

Xinjian Zhou, Zhouda Hou, Hongbing Zhang, Linhai Ding. Design and Simulation of Two-Stage Valve Core of Pure Water Medium Safety Valve. Academic Journal of Engineering and Technology Science (2021) Vol. 4, Issue 7: 37-43. https://doi.org/10.25236/AJETS.2021.040707.

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